Sensing and alarm function of resident memory CD8⁺ T cells.
Sensing and alarm function of resident memory CD8⁺ T cells.
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DOI:
10.1038/ni.2568
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发表时间:
2013-05
影响因子:
30.5
通讯作者:
Masopust, David
中科院分区:
文献类型:
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作者:
Schenkel, Jason M.;Fraser, Kathryn A.;Vezys, Vaiva;Masopust, David
CD8+ T cells eliminate intracellular infections through two contact-dependent effector functions: cytolysis and antiviral cytokine secretion. Here, we identify an additional function for memory CD8+ T cells persisting at frontline sites of microbial exposure: as local sensors of previously encountered antigens that precipitate innate-like alarm signals and draw circulating memory CD8+ T cells into the tissue. When memory CD8+ T cells residing in the female reproductive tract encountered cognate antigen, they expressed interferon-γ (IFN-γ), potentiated robust local inflammatory chemokine expression and induced rapid recruitment of circulating memory CD8+ T cells. Anamnestic responses in frontline tissues are thus an integrated collaboration between frontline and circulating populations of memory CD8+ T cells, and vaccines should establish both populations to maximize rapid responses.
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